You want to design a study to test whether the number of min…

You want to design a study to test whether the number of minutes a person exercises in a given week is associated with whether or not they are diagnosed with cardiovascular disease 10 years later. Which of the following statistical tests would be best to use to test this association?

Results from the 2014 National Health Interview Survey demon…

Results from the 2014 National Health Interview Survey demonstrated that 16.8% of adults over the age of 18 smoked cigarettes (95% confidence interval = 16.1% – 17.5%). Using 2015 data, it was observed that 15.1% of adults over the age of 18 smoked cigarettes (95% confidence interval = 14.5% – 15.7%). Given these results, which of the following statements is accurate?